/* Spot the Violation - app.css
 * Mobile first. Design tokens on :root; dark mode via prefers-color-scheme and a manual [data-theme] override.
 */

/* ---------- tokens ---------- */
:root {
  --bg: #f5f3ee;
  --surface: #ffffff;
  --surface-2: #f3f0ea;
  --surface-3: #ebe7df;
  --text: #1c1e21;
  --muted: #5b616a;
  --border: #ddd8ce;
  --border-strong: #c7c0b3;
  --accent: #e8590c;
  --accent-strong: #c2410c;     /* filled buttons: white text passes AA */
  --accent-hover: #a8380a;
  --accent-text: #b8470a;       /* accent used as text on light surfaces */
  --accent-soft: #fdeee4;
  --on-accent: #ffffff;
  --ok: #2e7d32;
  --ok-text: #1f6b24;
  --ok-soft: #e7f3e8;
  --bad: #c62828;
  --bad-text: #b02323;
  --bad-soft: #fcebea;
  --warn: #f59f00;
  --warn-text: #8a5300;
  --warn-soft: #fff4d9;
  --info-soft: #e9eef6;
  --info-text: #2f4f7f;
  --hotspot: #e03131;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(30, 25, 15, 0.06), 0 4px 14px rgba(30, 25, 15, 0.06);
  --shadow-lg: 0 2px 4px rgba(30, 25, 15, 0.06), 0 12px 32px rgba(30, 25, 15, 0.10);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --gutter: 16px;
  --maxw: 1200px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121417;
    --surface: #1b1e23;
    --surface-2: #22262c;
    --surface-3: #2a2f36;
    --text: #ecebe8;
    --muted: #a3a9b1;
    --border: #343941;
    --border-strong: #4a5059;
    --accent-text: #ff9a5c;
    --accent-soft: rgba(232, 89, 12, 0.16);
    --ok-text: #86cf8a;
    --ok-soft: rgba(46, 125, 50, 0.22);
    --bad-text: #f19a9a;
    --bad-soft: rgba(198, 40, 40, 0.22);
    --warn-text: #ffc552;
    --warn-soft: rgba(245, 159, 0, 0.16);
    --info-soft: rgba(110, 150, 220, 0.16);
    --info-text: #a9c4f0;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 14px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 2px 4px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #121417;
  --surface: #1b1e23;
  --surface-2: #22262c;
  --surface-3: #2a2f36;
  --text: #ecebe8;
  --muted: #a3a9b1;
  --border: #343941;
  --border-strong: #4a5059;
  --accent-text: #ff9a5c;
  --accent-soft: rgba(232, 89, 12, 0.16);
  --ok-text: #86cf8a;
  --ok-soft: rgba(46, 125, 50, 0.22);
  --bad-text: #f19a9a;
  --bad-soft: rgba(198, 40, 40, 0.22);
  --warn-text: #ffc552;
  --warn-soft: rgba(245, 159, 0, 0.16);
  --info-soft: rgba(110, 150, 220, 0.16);
  --info-text: #a9c4f0;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 14px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 2px 4px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
}
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 0.5em; }
h1 { font-size: 1.6rem; letter-spacing: -0.01em; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 0.75em; }
a { color: var(--accent-text); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
img, svg { max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
code, .mono { font-family: var(--mono); }
ul, ol { padding-left: 1.25rem; }
p, li, h1, h2, h3, dd, figcaption, .choice-text { overflow-wrap: anywhere; }
[hidden] { display: none !important; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
[tabindex="-1"]:focus { outline: none; }

.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.icon { width: 1.25em; height: 1.25em; flex: none; vertical-align: -0.25em; }

.skip-link {
  position: absolute; left: 8px; top: -60px; z-index: 100;
  padding: 10px 14px; border-radius: var(--radius-sm); border: 0;
  background: var(--accent-strong); color: var(--on-accent); font-weight: 700; cursor: pointer;
}
.skip-link:focus { top: 8px; }

/* ---------- header ---------- */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  border-top: 4px solid var(--accent);
  position: relative;
  z-index: 20;
}
.header-inner { display: flex; align-items: center; gap: 12px; min-height: 58px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 800; font-size: 1.08rem; letter-spacing: -0.01em; margin-right: auto; }
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand:hover { text-decoration: none; }
.header-actions { display: flex; align-items: center; gap: 6px; }
.icon-btn {
  display: inline-grid; place-items: center; width: 44px; height: 44px;
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text); cursor: pointer;
}
.icon-btn:hover { background: var(--surface-2); }
.icon-btn .icon { width: 22px; height: 22px; }
#theme-toggle .icon-sun { display: none; }
#theme-toggle[aria-pressed="true"] .icon-sun { display: block; }
#theme-toggle[aria-pressed="true"] .icon-moon { display: none; }

.site-nav { display: none; }
.site-nav ul { list-style: none; margin: 0; padding: 0; }
.site-nav a {
  display: block; padding: 10px 12px; border-radius: var(--radius-sm);
  color: var(--text); text-decoration: none; font-weight: 600; font-size: 0.95rem;
}
.site-nav a:hover { background: var(--surface-2); }
.site-nav a[aria-current="page"] { color: var(--accent-text); background: var(--accent-soft); }

/* mobile: nav drops down under the header */
.site-nav.is-open {
  display: block; position: absolute; left: 0; right: 0; top: 100%;
  background: var(--surface); border-bottom: 1px solid var(--border); box-shadow: var(--shadow-lg);
  padding: 8px var(--gutter) 12px;
}
.site-nav.is-open ul { display: grid; grid-template-columns: 1fr 1fr; gap: 2px 8px; }
@media (min-width: 720px) { .site-nav.is-open ul { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

/* The inline nav needs about 1170px for nine links next to the brand; below that the menu button is used, so
   links never break mid-word ("Ho/me") on small laptops. index.html and sandbox.html share this header. */
@media (min-width: 1200px) {
  .nav-toggle { display: none; }
  .site-nav, .site-nav.is-open { display: block; position: static; box-shadow: none; border: 0; padding: 0; background: none; }
  .site-nav ul, .site-nav.is-open ul { display: flex; gap: 2px; }
  .site-nav a { padding: 8px 10px; font-size: 0.92rem; white-space: nowrap; }
  .brand { margin-right: 12px; }
  .site-nav { margin-right: auto; }
}

/* ---------- layout ---------- */
.view { flex: 1 0 auto; padding-top: 20px; padding-bottom: 40px; }
.view:focus { outline: none; }
.page-head { margin-bottom: 18px; }
.page-head h1 { margin-bottom: 4px; }
.page-head p { color: var(--muted); margin: 0; }
.section { margin-top: 32px; }
.section-title { font-size: 0.78rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 0 0 10px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 16px;
}
.empty {
  text-align: center; padding: 32px 16px; border: 1px dashed var(--border-strong); border-radius: var(--radius); background: var(--surface);
}
.empty h2 { font-size: 1.15rem; }
.empty p { color: var(--muted); }

.site-footer { border-top: 1px solid var(--border); background: var(--surface); color: var(--muted); font-size: 0.85rem; padding: 18px 0 calc(18px + env(safe-area-inset-bottom)); }
.site-footer p { margin: 0 0 6px; }
.site-footer .disclaimer { color: var(--text); opacity: 0.8; }
.footer-links { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.footer-links a { color: var(--muted); }
/* phones and touch screens: full-size tap targets for the footer links */
@media (max-width: 719px), (pointer: coarse) {
  .footer-links { gap: 0 8px; }
  .footer-links a { display: inline-flex; align-items: center; min-height: 44px; }
}

/* ---------- buttons, chips, controls ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 10px 16px; border-radius: var(--radius); border: 1.5px solid var(--border-strong);
  background: var(--surface); color: var(--text); font-weight: 700; font-size: 0.95rem; line-height: 1.2;
  text-decoration: none; cursor: pointer; transition: background 0.15s, border-color 0.15s, transform 0.05s;
}
.btn:hover { background: var(--surface-2); border-color: var(--muted); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent-strong); border-color: var(--accent-strong); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); }
.btn-lg { min-height: 52px; padding: 12px 22px; font-size: 1.05rem; }
.btn-sm { min-height: 36px; padding: 6px 12px; font-size: 0.875rem; }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-ghost:hover { background: var(--surface-2); border-color: var(--border); }
.btn-danger { color: var(--bad-text); border-color: var(--bad); background: var(--surface); }
.btn-danger:hover { background: var(--bad-soft); border-color: var(--bad); }
.btn-danger-solid { background: var(--bad); border-color: var(--bad); color: #fff; }
.btn-danger-solid:hover { background: #a61f1f; border-color: #a61f1f; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

.kbd {
  display: inline-block; min-width: 1.6em; padding: 1px 5px; border: 1px solid var(--border-strong); border-bottom-width: 2px;
  border-radius: 4px; background: var(--surface-2); font-family: var(--mono); font-size: 0.75rem; line-height: 1.4; text-align: center; color: var(--text);
}

.chip {
  display: inline-flex; align-items: center; gap: 6px; min-height: 36px; padding: 6px 12px;
  border-radius: 999px; border: 1.5px solid var(--border); background: var(--surface); color: var(--text);
  font-size: 0.875rem; font-weight: 600; cursor: pointer; line-height: 1.2; text-align: left;
}
.chip:hover { border-color: var(--muted); }
.chip[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-text); }
.chip[aria-pressed="true"]::before {
  content: ""; width: 0.55em; height: 0.9em; border: solid currentColor; border-width: 0 2.5px 2.5px 0; transform: rotate(45deg) translate(-1px, -2px); flex: none;
}
.chip .count { font-weight: 500; color: var(--muted); font-size: 0.8rem; }
.chip[aria-pressed="true"] .count { color: inherit; opacity: 0.8; }
.chip-list { display: flex; flex-wrap: wrap; gap: 8px; }

.pill {
  display: inline-flex; align-items: center; gap: 5px; padding: 3px 9px; border-radius: 999px;
  font-size: 0.75rem; font-weight: 700; line-height: 1.3; border: 1px solid var(--border); background: var(--surface-2); color: var(--text);
  white-space: nowrap;
}
.pill .icon { width: 1.05em; height: 1.05em; vertical-align: 0; }
.pill-ok { background: var(--ok-soft); border-color: transparent; color: var(--ok-text); }
.pill-bad { background: var(--bad-soft); border-color: transparent; color: var(--bad-text); }
.pill-warn { background: var(--warn-soft); border-color: transparent; color: var(--warn-text); }
.pill-info { background: var(--info-soft); border-color: transparent; color: var(--info-text); }
.pill-gray { background: var(--surface-3); border-color: transparent; color: var(--muted); }
.pill-tag { background: transparent; color: var(--muted); font-weight: 600; }

.seg { display: inline-flex; padding: 3px; gap: 3px; border-radius: 999px; background: var(--surface-3); border: 1px solid var(--border); max-width: 100%; }
.seg button {
  min-height: 36px; padding: 6px 14px; border: 0; border-radius: 999px; background: transparent; color: var(--muted);
  font-weight: 700; font-size: 0.875rem; cursor: pointer; white-space: nowrap;
}
.seg button:hover { color: var(--text); }
.seg button[aria-pressed="true"] { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15); }

.field { display: grid; gap: 6px; }
.field label, .field .label { font-size: 0.8rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.input, .select {
  width: 100%; min-height: 44px; padding: 10px 12px; border: 1.5px solid var(--border-strong); border-radius: var(--radius);
  background: var(--surface); color: var(--text);
}
.input:focus-visible, .select:focus-visible { outline-offset: 0; border-color: var(--accent); }
.search-input { padding-left: 40px; background-image: none; }
.search-wrap { position: relative; }
.search-wrap .icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }

/* ---------- home ---------- */
.hero { display: grid; gap: 20px; padding: 8px 0 4px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 0.78rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-text); margin: 0 0 10px; }
.hero h1 { font-size: 2.2rem; letter-spacing: -0.02em; margin-bottom: 10px; }
.hero .lede { font-size: 1.1rem; color: var(--muted); max-width: 36em; margin-bottom: 20px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-actions .btn-primary { flex: 1 1 100%; }
.hero-actions .btn:not(.btn-primary) { flex: 1 1 auto; white-space: nowrap; padding-left: 12px; padding-right: 12px; }
.hero-note { margin-top: 14px; font-size: 0.9rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px 14px; }
.hero-note span { display: inline-flex; align-items: center; gap: 6px; }
.hero-preview { display: block; text-decoration: none; color: var(--text); border-radius: var(--radius); overflow: hidden; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-lg); }
.hero-preview img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; background: var(--surface-3); }
.hero-preview .preview-body { padding: 12px 14px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.hero-preview .preview-title { font-weight: 700; }
.hero-preview:hover .preview-go { text-decoration: underline; }
.preview-go { color: var(--accent-text); font-weight: 700; white-space: nowrap; display: inline-flex; align-items: center; gap: 4px; }

.stat-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 18px; }
.stat {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 12px; min-width: 0;
}
.stat .stat-value { display: block; font-size: 1.4rem; font-weight: 800; line-height: 1.15; font-variant-numeric: tabular-nums; }
.stat .stat-label { display: block; font-size: 0.75rem; color: var(--muted); font-weight: 600; }

.track-grid { display: grid; gap: 12px; }
.track-card { position: relative; display: flex; flex-direction: column; gap: 6px; padding: 16px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); color: var(--text); text-decoration: none; box-shadow: var(--shadow); }
a.track-card:hover { border-color: var(--accent); }
.track-card h3 { margin: 0; font-size: 1.15rem; display: flex; align-items: center; gap: 8px; }
.track-card .track-code { font-size: 0.85rem; color: var(--muted); }
.track-card p { margin: 0; font-size: 0.92rem; }
.track-card .track-foot { margin-top: auto; padding-top: 8px; display: flex; align-items: center; justify-content: space-between; gap: 8px; font-weight: 700; font-size: 0.9rem; }
.track-card.is-disabled { background: var(--surface-2); box-shadow: none; color: var(--muted); }
.track-icon { width: 34px; height: 34px; border-radius: 8px; display: inline-grid; place-items: center; background: var(--accent-soft); color: var(--accent-text); flex: none; }
.track-card.is-disabled .track-icon { background: var(--surface-3); color: var(--muted); }
.track-card.is-current { border-color: var(--accent); box-shadow: inset 0 3px 0 var(--accent), var(--shadow); }
.track-card .track-name { min-width: 0; }
.track-card .track-current { margin-left: auto; }

.cat-group + .cat-group { margin-top: 20px; }
.cat-group-title { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 1.02rem; margin: 0 0 10px; }
.cat-group-title .track-icon { width: 28px; height: 28px; border-radius: 7px; }
.cat-group-title .track-icon .icon { width: 18px; height: 18px; }
.cat-group-code { font-size: 0.75rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }

.cat-grid { display: grid; gap: 8px; grid-template-columns: 1fr; }
.cat-btn {
  display: flex; align-items: center; justify-content: space-between; gap: 10px; width: 100%; min-height: 52px; padding: 10px 14px;
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text); cursor: pointer; text-align: left;
}
.cat-btn:hover { border-color: var(--accent); }
.cat-btn .cat-name { font-weight: 700; font-size: 0.95rem; }
.cat-btn .cat-articles { display: block; font-size: 0.78rem; color: var(--muted); font-weight: 500; }
.cat-btn .count { flex: none; font-variant-numeric: tabular-nums; font-weight: 700; font-size: 0.85rem; color: var(--muted); background: var(--surface-2); border-radius: 999px; padding: 2px 9px; }
.cat-btn[disabled] { opacity: 0.55; cursor: default; }
.cat-btn[disabled]:hover { border-color: var(--border); }

.how { display: grid; gap: 10px; counter-reset: how; }
.how li { list-style: none; display: flex; gap: 12px; align-items: flex-start; }
.how li::before { counter-increment: how; content: counter(how); flex: none; display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--surface-3); font-weight: 800; font-size: 0.85rem; }
.how { padding: 0; margin: 0; }

@media (min-width: 720px) {
  .hero { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); align-items: center; gap: 36px; padding-top: 24px; }
  .hero h1 { font-size: 2.8rem; }
  .hero-actions .btn-primary { flex: 0 0 auto; }
  .hero-actions .btn:not(.btn-primary) { flex: 0 0 auto; padding-left: 16px; padding-right: 16px; }
  .track-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .how { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 1040px) {
  .cat-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ---------- drill view ---------- */
.drill-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 10px; }
@media (max-width: 479px) {
  .drill-toolbar .seg button { padding: 6px 11px; font-size: 0.85rem; }
  .filter-toggle { padding-left: 10px; padding-right: 10px; gap: 6px; }
  .filter-toggle .chev { display: none; }
}
.drill-toolbar .seg { flex: 0 1 auto; }
.filter-toggle { margin-left: auto; }
.track-seg button { display: inline-flex; align-items: center; justify-content: center; gap: 6px; }
.track-seg button .icon { width: 16px; height: 16px; }
.track-seg button[aria-pressed="true"] { color: var(--accent-text); }
.track-seg button[aria-pressed="true"] .icon { color: var(--accent); }
/* phones and narrow tablets: the trade switcher gets its own full-width row above mode + filters */
@media (max-width: 899px) {
  .drill-toolbar.has-tracks .track-seg { flex: 1 1 100%; display: flex; }
  .drill-toolbar.has-tracks .track-seg button { flex: 1 1 0; min-width: 0; padding-left: 8px; padding-right: 8px; }
}
@media (min-width: 900px) {
  .drill-toolbar.has-tracks { gap: 10px; }
}
.drill-meta .meta-track { display: inline-flex; align-items: center; gap: 4px; color: var(--accent-text); }
.drill-meta .meta-track .icon { width: 14px; height: 14px; }
.filter-toggle .filter-summary { display: none; font-weight: 500; color: var(--muted); max-width: 16em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.filter-badge { display: inline-grid; place-items: center; min-width: 20px; height: 20px; padding: 0 6px; border-radius: 999px; background: var(--accent-strong); color: var(--on-accent); font-size: 0.75rem; font-weight: 800; }
@media (min-width: 720px) {
  .filter-toggle .filter-summary { display: inline; }
  .filter-badge { display: none; }
}
.filter-toggle .chev { transition: transform 0.15s; }
.filter-toggle[aria-expanded="true"] .chev { transform: rotate(180deg); }

.filter-panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; margin-bottom: 14px; display: grid; gap: 14px; }
.filter-panel fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.filter-panel legend { font-size: 0.75rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; padding: 0; }
.filter-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; font-size: 0.875rem; color: var(--muted); }
.diff-seg { flex-wrap: wrap; border-radius: 14px; }
.diff-seg button { border-radius: 11px; }

.hud { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 16px; font-size: 0.875rem; color: var(--muted); margin-bottom: 14px; }
.hud-item { display: inline-flex; align-items: center; gap: 6px; font-variant-numeric: tabular-nums; }
.hud-item strong { color: var(--text); }
.hud-item .icon { width: 18px; height: 18px; }
.hud-streak.is-hot strong, .hud-streak.is-hot .icon { color: var(--accent-text); }
.hud .timer-btn { margin-left: auto; min-height: 32px; padding: 4px 10px; font-size: 0.8rem; font-weight: 700; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); color: var(--muted); cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.hud .timer-btn[aria-pressed="true"] { color: var(--text); border-color: var(--border-strong); }
.hud .timer-btn .icon { width: 16px; height: 16px; }

.drill-layout { display: grid; gap: 16px; align-items: start; }
.drill-main { min-width: 0; }
.drill-side { min-width: 0; }
.drill-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin-bottom: 6px; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); }
.drill-meta .meta-level { display: inline-flex; align-items: center; padding: 1px 8px; border-radius: 999px; background: var(--surface-3); color: var(--text); letter-spacing: 0.03em; white-space: nowrap; }
.drill-title { font-size: 1.35rem; margin-bottom: 12px; }

/* scene */
.scene { margin: 0; }
.scene-wrap {
  position: relative; width: 100%; max-width: 800px; aspect-ratio: 4 / 3; margin: 0 auto;
  border-radius: var(--radius); overflow: hidden; background: var(--surface-3);
  border: 1px solid var(--border); box-shadow: var(--shadow);
}
.scene-frame { position: absolute; inset: 0; }
.scene-frame > svg, .scene-frame > img { display: block; width: 100%; height: 100%; }
.scene-frame > img { object-fit: contain; user-select: none; -webkit-user-select: none; }
.scene-overlay { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.scene-markers { position: absolute; inset: 0; pointer-events: none; }
.scene-caption { margin-top: 8px; font-size: 0.875rem; color: var(--muted); text-align: center; }
.scene-fallback { display: grid; place-items: center; height: 100%; padding: 16px; text-align: center; color: var(--muted); }

.scene-wrap.is-spot { cursor: crosshair; outline: 2px dashed var(--accent); outline-offset: 3px; }
.scene-hit {
  position: absolute; inset: 0; width: 100%; height: 100%; padding: 0; margin: 0; border: 0; background: transparent;
  cursor: crosshair; border-radius: var(--radius); -webkit-tap-highlight-color: transparent; touch-action: manipulation;
}
.scene-hit:focus-visible { outline: 3px solid var(--accent); outline-offset: -4px; }

.spot-hint {
  position: absolute; left: 50%; bottom: 10px; transform: translateX(-50%); z-index: 2; pointer-events: none;
  animation: hint-out 0.5s ease 2.4s forwards;
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px;
  background: rgba(20, 22, 25, 0.78); color: #fff; font-size: 0.8rem; font-weight: 700; white-space: nowrap;
}
.spot-hint .icon { width: 16px; height: 16px; }
@keyframes hint-out { to { opacity: 0; visibility: hidden; } }

.hs-reveal { animation: hs-pop 0.35s ease-out both; transform-box: fill-box; transform-origin: center; }
.hs-halo { fill: none; stroke: #fff; stroke-opacity: 0.92; stroke-width: 8px; vector-effect: non-scaling-stroke; }
.hs-line { fill: rgba(224, 49, 49, 0.12); stroke: var(--hotspot); stroke-width: 4px; vector-effect: non-scaling-stroke; }
@keyframes hs-pop { from { opacity: 0; transform: scale(1.12); } to { opacity: 1; transform: none; } }

.marker { position: absolute; width: 36px; height: 36px; transform: translate(-50%, -50%); border-radius: 50%; }
.marker-miss { border: 2px dashed rgba(255, 255, 255, 0.95); background: rgba(20, 22, 25, 0.28); box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.35); opacity: 0.85; }
.marker-miss::before, .marker-miss::after { content: ""; position: absolute; left: 50%; top: 50%; width: 14px; height: 2.5px; background: #fff; border-radius: 2px; }
.marker-miss::before { transform: translate(-50%, -50%) rotate(45deg); }
.marker-miss::after { transform: translate(-50%, -50%) rotate(-45deg); }
.marker-hit { border: 3px solid #2fbf55; background: rgba(47, 191, 85, 0.25); box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.9); animation: marker-pop 0.3s ease-out both; }
.marker-label {
  position: absolute; top: calc(100% + 4px); left: 50%; transform: translateX(-50%); white-space: nowrap;
  padding: 2px 8px; border-radius: 999px; background: rgba(20, 22, 25, 0.75); color: #fff; font-size: 0.72rem; font-weight: 700;
}
.marker.label-above .marker-label { top: auto; bottom: calc(100% + 4px); }
.marker.label-right .marker-label { left: 0; transform: none; }
.marker.label-left .marker-label { left: auto; right: 0; transform: none; }
@keyframes marker-pop { from { transform: translate(-50%, -50%) scale(0.4); opacity: 0; } to { transform: translate(-50%, -50%) scale(1); opacity: 1; } }

.crosshair { position: absolute; width: 44px; height: 44px; transform: translate(-50%, -50%); border: 2px solid #fff; border-radius: 50%; box-shadow: 0 0 0 2px var(--accent), 0 0 0 4px rgba(0, 0, 0, 0.25); }
.crosshair::before, .crosshair::after { content: ""; position: absolute; background: #fff; box-shadow: 0 0 0 1px var(--accent); }
.crosshair::before { left: 50%; top: -12px; bottom: -12px; width: 2px; transform: translateX(-50%); }
.crosshair::after { top: 50%; left: -12px; right: -12px; height: 2px; transform: translateY(-50%); }

.scene-badge {
  position: absolute; left: 10px; top: 10px; display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px;
  font-size: 0.85rem; font-weight: 800; color: #fff; background: var(--ok); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  animation: marker-fade 0.3s ease-out both;
}
.scene-badge-ok::before { content: ""; width: 0.5em; height: 0.85em; border: solid #fff; border-width: 0 2.5px 2.5px 0; transform: rotate(45deg) translate(-1px, -2px); }
@keyframes marker-fade { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

/* question + choices */
.question { display: grid; gap: 12px; }
.prompt { font-size: 1.2rem; margin: 0; display: flex; align-items: baseline; gap: 10px; }
.choices { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.choice {
  display: flex; align-items: flex-start; gap: 12px; width: 100%; min-height: 60px; padding: 14px 14px;
  text-align: left; font-size: 1rem; line-height: 1.38; background: var(--surface); color: var(--text);
  border: 1.5px solid var(--border-strong); border-radius: var(--radius); cursor: pointer; box-shadow: var(--shadow);
  transition: border-color 0.15s, background 0.15s, transform 0.06s, opacity 0.2s;
  -webkit-tap-highlight-color: transparent; touch-action: manipulation;
}
.choice:hover { border-color: var(--accent); background: var(--accent-soft); }
.choice:active { transform: scale(0.995); }
.choice .key {
  flex: none; display: inline-grid; place-items: center; width: 30px; height: 30px; margin-top: -2px;
  border-radius: 7px; border: 1px solid var(--border-strong); border-bottom-width: 2px; background: var(--surface-2);
  font-family: var(--mono); font-weight: 800; font-size: 0.9rem; color: var(--muted);
}
.choice .key .icon { width: 18px; height: 18px; vertical-align: 0; }
.choice-text { flex: 1 1 auto; min-width: 0; padding-top: 1px; }
.choice-flag { display: block; margin-top: 6px; font-size: 0.75rem; font-weight: 800; letter-spacing: 0.05em; text-transform: uppercase; }
.choices.is-answered .choice { cursor: default; box-shadow: none; }
.choices.is-answered .choice:hover { background: var(--surface); border-color: var(--border-strong); }
.choices.is-answered .choice:active { transform: none; }
.choice.is-correct, .choices.is-answered .choice.is-correct:hover { border-color: var(--ok); background: var(--ok-soft); border-width: 2px; }
.choice.is-correct .key { background: var(--ok); border-color: var(--ok); color: #fff; }
.choice.is-correct .choice-flag { color: var(--ok-text); }
.choice.is-wrong, .choices.is-answered .choice.is-wrong:hover { border-color: var(--bad); background: var(--bad-soft); border-width: 2px; }
.choice.is-wrong .key { background: var(--bad); border-color: var(--bad); color: #fff; }
.choice.is-wrong .choice-flag { color: var(--bad-text); }
.choice.is-dim { opacity: 0.55; }

.spot-panel { display: grid; gap: 12px; padding: 14px; border-radius: var(--radius); border: 1px dashed var(--accent); background: var(--accent-soft); }
.spot-panel p { margin: 0; }
.spot-instr { display: flex; gap: 10px; align-items: flex-start; font-weight: 600; }
.spot-instr .icon { color: var(--accent-text); width: 22px; height: 22px; margin-top: 1px; }
.spot-tries { font-size: 0.9rem; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.tries-dots { display: inline-flex; gap: 4px; }
.tries-dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); display: inline-block; }
.tries-dots i.used { background: transparent; border: 2px solid var(--border-strong); }
.spot-feedback { font-weight: 700; color: var(--bad-text); }
.looks-fine { width: 100%; min-height: 52px; }
.key-hints { font-size: 0.8rem; color: var(--muted); display: none; gap: 4px 12px; flex-wrap: wrap; }
.key-hints span { display: inline-flex; align-items: center; gap: 4px; }
@media (hover: hover) and (pointer: fine) { .key-hints { display: flex; } }

/* reveal panel */
.reveal {
  margin-top: 16px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow);
  animation: reveal-in 0.28s ease-out both;
}
.reveal:focus { outline: none; }
@keyframes reveal-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.banner { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: var(--radius) var(--radius) 0 0; border-bottom: 1px solid var(--border); }
.banner-icon { flex: none; width: 34px; height: 34px; border-radius: 50%; display: inline-grid; place-items: center; color: #fff; }
.banner-icon .icon { width: 20px; height: 20px; vertical-align: 0; }
.banner-ok { background: var(--ok-soft); border-bottom-color: var(--ok); }
.banner-ok .banner-icon { background: var(--ok); }
.banner-ok .banner-title { color: var(--ok-text); }
.banner-bad { background: var(--bad-soft); border-bottom-color: var(--bad); }
.banner-bad .banner-icon { background: var(--bad); }
.banner-bad .banner-title { color: var(--bad-text); }
.banner-title { font-size: 1.15rem; font-weight: 800; margin: 2px 0 4px; }
.banner-body { min-width: 0; flex: 1; }
.banner-body p { margin: 0 0 4px; font-size: 0.95rem; }
.banner-body .why { margin-top: 6px; padding-top: 6px; border-top: 1px solid rgba(127, 127, 127, 0.25); }
.banner-body .lbl { font-weight: 700; }

.reveal-body { padding: 16px; display: grid; gap: 20px; }
.reveal-block h3 { font-size: 0.75rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 0 0 8px; display: flex; align-items: center; gap: 6px; }
.reveal-block h3 .icon { width: 16px; height: 16px; }
.answer-text { font-weight: 800; font-size: 1.08rem; line-height: 1.4; margin: 0 0 8px; }
.explain { margin: 0; }
.fix-box { padding: 12px 14px; border-radius: 8px; background: var(--ok-soft); border-left: 4px solid var(--ok); }
.fix-box p { margin: 0; }

.refs { display: grid; gap: 10px; list-style: none; margin: 0; padding: 0; }
.ref-card { border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 8px; padding: 12px 14px; background: var(--surface-2); }
.ref-card.is-secondary { border-left-color: var(--border-strong); }
.ref-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin-bottom: 4px; }
.code-badge { display: inline-block; padding: 2px 8px; border-radius: 4px; background: var(--text); color: var(--surface); font-size: 0.7rem; font-weight: 800; letter-spacing: 0.04em; text-transform: uppercase; white-space: nowrap; }
.ref-section { font-family: var(--mono); font-size: 1.08rem; font-weight: 800; letter-spacing: -0.01em; }
.ref-primary { margin-left: auto; font-size: 0.7rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent-text); }
.ref-title { font-weight: 700; margin: 0 0 4px; }
.ref-summary { margin: 0; font-size: 0.92rem; line-height: 1.45; }
.ref-link { display: inline-block; margin-top: 6px; font-size: 0.8rem; font-weight: 600; }

.mn-note { padding: 12px 14px; border-radius: 8px; background: var(--surface-2); border: 1px solid var(--border); border-left: 4px solid var(--border-strong); }
.mn-note.is-amended { background: var(--warn-soft); border-left-color: var(--warn); }
.mn-note.is-unverified { border-left-color: var(--muted); }
.mn-note.is-mn-specific { border-left-color: var(--info-text); }
.mn-note .mn-head { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 6px; }
.mn-note p { margin: 0; font-size: 0.92rem; }
.mn-note .mn-more { display: inline-block; margin-top: 6px; font-size: 0.8rem; font-weight: 600; }
.verify-note { padding: 10px 12px; border-radius: 8px; background: var(--warn-soft); color: var(--text); font-size: 0.875rem; display: flex; gap: 8px; align-items: flex-start; }
.verify-note .icon { color: var(--warn-text); margin-top: 1px; }

.chips-row { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.mastery-row { display: flex; align-items: center; gap: 10px; font-size: 0.875rem; color: var(--muted); flex-wrap: wrap; }
.mastery-meter { display: inline-flex; gap: 3px; }
.mastery-meter i { width: 18px; height: 6px; border-radius: 3px; background: var(--surface-3); display: inline-block; }
.mastery-meter i.on { background: var(--ok); }
.reveal-links { display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: 0.875rem; }
.reveal-links a, .reveal-links button.linklike { display: inline-flex; align-items: center; gap: 5px; }
.linklike { border: 0; background: none; padding: 0; color: var(--accent-text); text-decoration: underline; text-underline-offset: 2px; cursor: pointer; font-size: inherit; }

.next-bar {
  position: sticky; bottom: 0; z-index: 5; padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: var(--surface); border-top: 1px solid var(--border); border-radius: 0 0 var(--radius) var(--radius);
  display: flex; align-items: center; gap: 12px;
}
.next-btn { flex: 1; min-height: 52px; font-size: 1.05rem; }
.next-bar .key-hint { display: none; font-size: 0.8rem; color: var(--muted); white-space: nowrap; }
@media (hover: hover) and (pointer: fine) { .next-bar .key-hint { display: inline-flex; gap: 4px; align-items: center; } }

.not-found { max-width: 560px; margin: 24px auto; }

@media (min-width: 720px) {
  .drill-title { font-size: 1.5rem; }
  .filter-panel { padding: 16px; }
}
@media (min-width: 1080px) {
  .drill-layout { grid-template-columns: minmax(0, 1.45fr) minmax(360px, 1fr); gap: 28px; }
  .drill-main { position: sticky; top: 16px; }
  .next-bar { border-radius: 0 0 var(--radius) var(--radius); }
}

/* ---------- browse ---------- */
.browse-controls { display: grid; gap: 10px; margin-bottom: 12px; }
.browse-controls .row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.result-count { font-size: 0.875rem; color: var(--muted); margin: 0 0 12px; }
.card-grid { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 240px), 1fr)); }
.drill-card {
  display: flex; flex-direction: column; height: 100%; text-decoration: none; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: border-color 0.15s, transform 0.15s;
}
.drill-card:hover { border-color: var(--accent); transform: translateY(-1px); text-decoration: none; }
.thumb { aspect-ratio: 4 / 3; background: var(--surface-3); position: relative; }
.thumb img { display: block; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 0.2s; }
.thumb img.is-loaded { opacity: 1; }
.drill-card .card-body { padding: 10px 12px 12px; display: grid; gap: 6px; flex: 1; align-content: start; }
.card-title { font-size: 1rem; margin: 0; line-height: 1.3; }
.card-meta { font-size: 0.8rem; color: var(--muted); margin: 0; }
.card-foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: auto; padding-top: 4px; }
.mastery { display: inline-flex; align-items: center; gap: 6px; font-size: 0.78rem; font-weight: 700; color: var(--muted); }
.mastery-dot { width: 10px; height: 10px; border-radius: 50%; flex: none; display: inline-block; }
.mastery-dot.b-new { border: 2px solid var(--border-strong); background: transparent; }
.mastery-dot.b0 { background: var(--bad); }
.mastery-dot.b1 { background: var(--warn); }
.mastery-dot.b2 { background: #3b82c4; }
.mastery-dot.b3 { background: var(--ok); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 0.78rem; color: var(--muted); margin-bottom: 12px; }
.legend span { display: inline-flex; align-items: center; gap: 5px; }

@media (max-width: 559px) {
  .card-grid { gap: 8px; }
  .drill-card { flex-direction: row; align-items: stretch; }
  .drill-card .thumb { flex: 0 0 116px; aspect-ratio: auto; min-height: 87px; }
  .drill-card .thumb img { position: absolute; inset: 0; }
  .drill-card .card-body { padding: 8px 10px; gap: 3px; }
  .drill-card .card-title { font-size: 0.95rem; }
  .drill-card .card-foot { flex-wrap: wrap; gap: 4px 8px; }
}
.browse-controls.has-track .row .field-track { grid-column: 1 / -1; }
.card-meta .card-track { display: inline-flex; align-items: center; gap: 3px; font-weight: 700; color: var(--accent-text); margin-right: 6px; }
.card-meta .card-track .icon { width: 13px; height: 13px; }
@media (min-width: 720px) {
  .browse-controls { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr); align-items: end; }
  .browse-controls .row { display: contents; }
  .browse-controls.has-track { grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr) minmax(0, 1.1fr) minmax(0, 0.8fr); }
  .browse-controls.has-track .row .field-track { grid-column: auto; }
}

/* ---------- code index ---------- */
.code-group { margin-top: 24px; }
.code-group h2, .code-group-title { display: flex; align-items: center; gap: 10px; }
h3.code-group-title { font-size: 1.05rem; }
.codes-controls { display: grid; gap: 10px; margin-bottom: 8px; }
@media (min-width: 720px) { .codes-controls { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); align-items: end; } }
.code-jump { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 4px; }
.code-jump .chip .icon { width: 16px; height: 16px; color: var(--accent-text); }
.code-track { margin-top: 28px; padding-top: 4px; scroll-margin-top: 12px; }
.code-track-title:focus { outline: none; }
.code-jump + .code-track { margin-top: 16px; }
.code-track-title { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 10px; font-size: 1.3rem; margin: 0; padding-bottom: 8px; border-bottom: 2px solid var(--border); }
.code-track-title .track-icon .icon { width: 20px; height: 20px; }
.code-track-sub { font-size: 0.8rem; font-weight: 600; color: var(--muted); }
.code-track .code-group { margin-top: 16px; }
.code-list { list-style: none; margin: 0; padding: 0; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.code-list > li + li { border-top: 1px solid var(--border); }
.code-row > summary {
  list-style: none; display: grid; grid-template-columns: minmax(7.5em, auto) minmax(0, 1fr) auto auto; align-items: center; gap: 10px;
  padding: 12px 14px; cursor: pointer; min-height: 52px;
}
.code-row > summary::-webkit-details-marker { display: none; }
.code-row > summary:hover { background: var(--surface-2); }
.code-row .sec { font-family: var(--mono); font-weight: 800; }
.code-row .sec-title { min-width: 0; }
.code-row .sec-count { font-size: 0.8rem; color: var(--muted); font-weight: 700; white-space: nowrap; font-variant-numeric: tabular-nums; }
.code-row .chev { color: var(--muted); transition: transform 0.15s; }
.code-row[open] .chev { transform: rotate(180deg); }
.code-row[open] > summary { background: var(--surface-2); }
.code-drills { list-style: none; margin: 0; padding: 4px 14px 12px; display: grid; gap: 2px; background: var(--surface-2); }
.code-drills a { display: flex; align-items: center; gap: 8px; padding: 8px 4px; font-weight: 600; min-height: 40px; }
.code-row.is-target > summary { box-shadow: inset 4px 0 0 var(--accent); }
@media (max-width: 520px) {
  .code-row > summary { grid-template-columns: minmax(0, 1fr) auto auto; }
  .code-row .sec-title { grid-column: 1 / -1; grid-row: 2; font-size: 0.9rem; color: var(--muted); }
}

/* ---------- stats ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
@media (min-width: 720px) { .stat-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); } }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.cat-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.cat-table th, .cat-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: middle; }
.cat-table tr:last-child td { border-bottom: 0; }
.cat-table th { font-size: 0.72rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); background: var(--surface-2); }
.cat-table td.num, .cat-table th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.cat-table tr.is-weak td { background: var(--warn-soft); }
.cat-table tr.cat-track-row th {
  background: var(--surface-3); color: var(--text); font-size: 0.85rem; letter-spacing: 0; text-transform: none;
  border-top: 2px solid var(--border-strong);
}
.cat-table thead + tbody tr.cat-track-row th { border-top: 0; }
.cat-track-name { display: inline-flex; align-items: center; gap: 6px; font-weight: 800; margin-right: 10px; }
.cat-track-name .icon { width: 16px; height: 16px; color: var(--accent-text); }
.cat-track-sum { font-weight: 600; color: var(--muted); font-size: 0.8rem; white-space: nowrap; }
.cat-table .cat-cell { min-width: 9em; }
.cat-table .cat-cell .pill { margin-top: 4px; }
.cat-table .cat-actions { margin-top: 6px; }
.acc-bar { display: block; height: 4px; border-radius: 2px; background: var(--surface-3); margin-top: 4px; overflow: hidden; min-width: 40px; }
.acc-bar > span { display: block; height: 100%; background: var(--ok); }
.recent-list { list-style: none; margin: 0; padding: 0; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.recent-list li { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-top: 1px solid var(--border); font-size: 0.92rem; }
.recent-list li:first-child { border-top: 0; }
.recent-list .res { flex: none; width: 24px; height: 24px; border-radius: 50%; display: inline-grid; place-items: center; color: #fff; }
.recent-list .res.ok { background: var(--ok); }
.recent-list .res.bad { background: var(--bad); }
.recent-list .res .icon { width: 14px; height: 14px; vertical-align: 0; }
.recent-list a { flex: 1; min-width: 0; font-weight: 600; }
.recent-list .when { font-size: 0.78rem; color: var(--muted); white-space: nowrap; }
.data-actions { display: grid; gap: 12px; }
.data-actions p.small { margin: 0; }
.confirm-box { padding: 12px 14px; border-radius: var(--radius); border: 1.5px solid var(--bad); background: var(--bad-soft); display: grid; gap: 10px; }
.confirm-box p { margin: 0; font-weight: 600; }
.status-msg { font-size: 0.9rem; font-weight: 600; margin: 0; }
.status-msg:empty { display: none; }
.status-msg.ok { color: var(--ok-text); }
.status-msg.bad { color: var(--bad-text); }
.prefs { display: grid; gap: 14px; }
.check-row { display: flex; align-items: center; gap: 10px; min-height: 44px; cursor: pointer; }
.check-row input { width: 20px; height: 20px; accent-color: var(--accent-strong); }

/* ---------- shared: callouts, external links, confidence, form extras ---------- */
a .icon.ext { width: 0.9em; height: 0.9em; margin-left: 3px; vertical-align: -0.08em; }
.callout { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface-2); font-size: 0.92rem; margin-bottom: 16px; }
.callout > .icon { margin-top: 1px; }
.callout-body { min-width: 0; }
.callout-body p { margin: 0; }
.callout-warn { background: var(--warn-soft); border-color: transparent; border-left: 4px solid var(--warn); }
.callout-warn > .icon { color: var(--warn-text); }
.callout-info { background: var(--info-soft); border-color: transparent; border-left: 4px solid var(--info-text); }
.callout-info > .icon { color: var(--info-text); }

.pill-conf { background: transparent; color: var(--text); font-weight: 600; }
.conf-bars { display: inline-flex; align-items: flex-end; gap: 2px; height: 11px; }
.conf-bars i { display: block; width: 3px; border-radius: 1px; background: var(--border-strong); }
.conf-bars i:nth-child(1) { height: 5px; }
.conf-bars i:nth-child(2) { height: 8px; }
.conf-bars i:nth-child(3) { height: 11px; }
.conf-high .conf-bars i.on { background: var(--ok); }
.conf-medium .conf-bars i.on { background: var(--warn); }
.conf-low .conf-bars i.on { background: var(--bad); }

.textarea { min-height: 72px; resize: vertical; line-height: 1.45; }
.input.mono { font-family: var(--mono); }
.input-sm { min-height: 36px; padding: 6px 8px; }
.field-hint { margin: 0; font-size: 0.82rem; color: var(--muted); }
.field-error { margin: 0; font-size: 0.85rem; font-weight: 700; color: var(--bad-text); display: flex; gap: 6px; align-items: flex-start; }
.field-error .icon { width: 16px; height: 16px; margin-top: 2px; }
.input[aria-invalid="true"], .select[aria-invalid="true"] { border-color: var(--bad); box-shadow: 0 0 0 1px var(--bad); }
.file-input:focus-visible + .file-btn { outline: 3px solid var(--accent); outline-offset: 2px; }
.file-btn { cursor: pointer; }
.field .check-row { font-size: 0.95rem; font-weight: 600; color: var(--text); text-transform: none; letter-spacing: 0; min-height: 40px; }
.btn.is-on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-text); }

/* ---------- edition notice + 2026 NEC line ---------- */
.edition-notice {
  display: flex; align-items: flex-start; gap: 10px; padding: 8px 6px 8px 14px; margin: 0 0 14px;
  border-radius: var(--radius); background: var(--info-soft); border-left: 4px solid var(--info-text); font-size: 0.9rem; line-height: 1.45;
}
.edition-notice > .icon { color: var(--info-text); margin-top: 3px; }
.edition-notice p { margin: 0; flex: 1; min-width: 0; padding: 2px 0; }
.edition-notice a { font-weight: 700; white-space: nowrap; }
.edition-notice .edition-dismiss { width: 36px; height: 36px; flex: none; background: transparent; border-color: transparent; color: var(--muted); }
.edition-notice .edition-dismiss:hover { background: rgba(127, 127, 127, 0.14); color: var(--text); }
.edition-notice .edition-dismiss .icon { width: 18px; height: 18px; }
.view-home .edition-notice { margin-top: 2px; }
/* next-edition line: "2026 NEC: same rule and number" (electrical) or "2024 IRC: ..." (other tracks) */
.edition-line { margin: 10px 0 0; display: block; font-size: 0.875rem; line-height: 1.5; color: var(--muted); }
.edition-line .pill-conf { margin-left: 6px; vertical-align: 1px; }
.edition-label { font-weight: 800; color: var(--text); margin-right: 6px; }
.edition-line.is-changed .edition-label, .edition-line.is-renumbered .edition-label { color: var(--warn-text); }
.edition-text { min-width: 0; }
.cf-sub-sep { padding-top: 12px; border-top: 1px solid var(--border); }
.cf-n26 { display: grid; gap: 12px; }
.cf-card-body { display: grid; gap: 14px; min-width: 0; }

/* ---------- minnesota ---------- */
.mn-layout { display: grid; gap: 16px; }
.mn-aside { min-width: 0; }
.mn-toc { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.mn-toc-title {
  list-style: none; display: flex; align-items: center; gap: 8px; min-height: 44px; padding: 8px 14px; cursor: pointer;
  font-size: 0.75rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted);
}
.mn-toc-title::-webkit-details-marker { display: none; }
.mn-toc-count { font-size: 0.72rem; letter-spacing: 0; padding: 1px 7px; border-radius: 999px; background: var(--surface-3); }
.mn-toc-title .chev { margin-left: auto; transition: transform 0.15s; }
.mn-toc[open] .mn-toc-title .chev { transform: rotate(180deg); }
.mn-toc ol { list-style: none; margin: 0; padding: 0 14px 14px; display: flex; flex-wrap: wrap; gap: 6px; }
.mn-toc a {
  display: inline-flex; align-items: center; min-height: 36px; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--surface-2); color: var(--text); text-decoration: none; font-size: 0.875rem; font-weight: 600; line-height: 1.25;
}
.mn-toc a:hover { border-color: var(--accent); }
.mn-toc a[aria-current] { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-text); }
.mn-content { min-width: 0; display: grid; gap: 16px; }
.mn-intro { display: grid; gap: 12px; }
.mn-intro .callout { margin: 0; }
.mn-meta { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 0.85rem; color: var(--muted); margin: 0; }
.mn-meta span { display: inline-flex; align-items: center; gap: 6px; }
.mn-meta .icon { width: 16px; height: 16px; }
.mn-lede { font-size: 1.05rem; line-height: 1.6; margin: 0; max-width: 48em; }
.mn-legend { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.mn-legend > summary { list-style: none; display: flex; align-items: center; gap: 8px; padding: 10px 14px; cursor: pointer; font-weight: 700; font-size: 0.92rem; min-height: 44px; }
.mn-legend > summary::-webkit-details-marker { display: none; }
.mn-legend > summary .icon { color: var(--muted); }
.mn-legend > summary .chev { margin-left: auto; transition: transform 0.15s; }
.mn-legend[open] > summary .chev { transform: rotate(180deg); }
.mn-legend dl { margin: 0; padding: 2px 14px 14px; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 8px 14px; align-items: center; font-size: 0.9rem; }
.mn-legend dt { margin: 0; }
.mn-legend dd { margin: 0; color: var(--muted); }
.mn-section { padding: 18px 16px; scroll-margin-top: 12px; }
.mn-sec-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.mn-sec-head h2, .mn-sec-head h3 { margin: 0; font-size: 1.25rem; }
.mn-sec-icon { width: 34px; height: 34px; border-radius: 8px; display: inline-grid; place-items: center; background: var(--accent-soft); color: var(--accent-text); flex: none; }
.mn-sec-body p { max-width: 48em; }
.mn-sec-body p:last-child { margin-bottom: 0; }
.mn-items { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 10px; }
.mn-item { border: 1px solid var(--border); border-left: 4px solid var(--border-strong); border-radius: 8px; padding: 12px 14px; background: var(--surface-2); min-width: 0; }
.mn-item.is-amended { border-left-color: var(--warn); background: var(--warn-soft); }
.mn-item h3, .mn-item h4 { font-size: 1rem; margin: 0 0 6px; }
.mn-item.is-mn-specific { border-left-color: var(--info-text); }
.mn-item p { margin: 0; font-size: 0.95rem; }
.mn-badges { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-bottom: 8px; }
.mn-cite { display: inline-block; max-width: 100%; font-family: var(--mono); font-size: 0.74rem; font-weight: 700; line-height: 1.45; padding: 3px 8px; border-radius: 4px; background: var(--text); color: var(--surface); white-space: normal; overflow-wrap: anywhere; }
.mn-links { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--border); }
.mn-links h3, .mn-links-title { font-size: 0.75rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 0 0 6px; }
.mn-trade { display: grid; gap: 16px; min-width: 0; scroll-margin-top: 12px; }
.mn-trade + .mn-trade, .mn-intro + .mn-trade { margin-top: 12px; }
.mn-trade-head { display: flex; align-items: center; gap: 12px; padding: 4px 2px 10px; border-bottom: 3px solid var(--accent); }
.mn-trade-icon { width: 40px; height: 40px; border-radius: 10px; display: inline-grid; place-items: center; background: var(--accent-strong); color: var(--on-accent); flex: none; }
.mn-trade-icon .icon { width: 22px; height: 22px; }
.mn-trade-title { margin: 0; font-size: 1.5rem; letter-spacing: -0.01em; }
.mn-trade-sub { margin: 2px 0 0; font-size: 0.78rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.mn-toc-group + .mn-toc-group { margin-top: 4px; }
.mn-toc-trade { display: flex; align-items: center; gap: 6px; margin: 0; padding: 4px 14px 6px; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-text); }
.mn-toc-trade .icon { width: 14px; height: 14px; }
.mn-links ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.mn-links a { display: inline-flex; align-items: center; min-height: 36px; font-weight: 600; }
.mn-links.is-grid ul { grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); gap: 10px; }
.mn-link-card { display: grid; gap: 2px; height: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-2); text-decoration: none; }
.mn-link-card:hover { border-color: var(--accent); }
.mn-link-card .mn-link-label { font-weight: 700; text-decoration: underline; text-underline-offset: 2px; }
.mn-link-card:hover .mn-link-label { text-decoration-thickness: 2px; }
.mn-host { font-size: 0.75rem; color: var(--muted); font-family: var(--mono); overflow-wrap: anywhere; }
.mn-cta { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: space-between; }
.mn-cta h2 { font-size: 1.1rem; margin-bottom: 4px; }
.mn-cta p { margin: 0; color: var(--muted); max-width: 36em; }
.mn-missing { max-width: 640px; margin: 8px auto 0; }
.mn-fallback-links { list-style: none; padding: 0; margin: 0 0 16px; display: grid; gap: 4px; justify-items: center; }
@media (min-width: 1000px) {
  .mn-layout { grid-template-columns: 230px minmax(0, 1fr); gap: 28px; align-items: start; }
  .mn-aside { position: sticky; top: 16px; }
  .mn-toc { padding: 6px 6px 10px; }
  .mn-toc-title { padding: 6px 10px; min-height: 0; }
  .mn-toc ol { display: grid; gap: 2px; padding: 0; }
  .mn-toc a { display: flex; border: 0; border-left: 3px solid transparent; background: none; border-radius: 0 6px 6px 0; padding: 8px 10px; min-height: 0; }
  .mn-toc a:hover { background: var(--surface-2); }
  .mn-toc a[aria-current] { border-left-color: var(--accent); }
  .mn-toc-trade { padding: 10px 10px 4px; }
  .mn-toc-group:first-child .mn-toc-trade { padding-top: 2px; }
  .mn-section { padding: 22px 24px; }
}
@media (max-width: 480px) {
  .mn-legend dl { grid-template-columns: 1fr; gap: 4px; }
  .mn-legend dd { margin-bottom: 8px; }
}

/* ---------- contribute ---------- */
.cf-layout { display: grid; gap: 16px; align-items: start; }
.cf-media-col { min-width: 0; }
.cf-fields { display: grid; gap: 16px; min-width: 0; }
.cf-card { display: grid; gap: 14px; min-width: 0; }
.cf-card-title { display: flex; align-items: center; gap: 10px; font-size: 1.05rem; margin: 0; }
.cf-card-title .step { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-text); font-size: 0.8rem; font-weight: 800; flex: none; }
.cf-row { display: grid; gap: 12px; grid-template-columns: minmax(0, 1fr); }
.cf-sub { font-size: 0.8rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; margin: 0; }
.cf-stage-host { display: grid; gap: 10px; min-width: 0; }
.cf-stage-host > p { margin: 0; }
.cf-media-card .status-msg { margin: 0; }
.cf-media-errors:empty { display: none; }
.cf-drop {
  display: grid; justify-items: center; align-content: center; gap: 10px; text-align: center; min-height: 260px; padding: 28px 16px;
  border: 2px dashed var(--border-strong); border-radius: var(--radius); background: var(--surface-2);
}
.cf-drop.is-over { border-color: var(--accent); background: var(--accent-soft); }
.cf-drop p { margin: 0; }
.cf-drop-icon { width: 52px; height: 52px; border-radius: 50%; display: inline-grid; place-items: center; background: var(--accent-soft); color: var(--accent-text); }
.cf-drop-icon .icon { width: 26px; height: 26px; }
.cf-drop-title { font-weight: 800; font-size: 1.05rem; }
.cf-stage { position: relative; width: 100%; border-radius: var(--radius); overflow: hidden; background: var(--surface-3); border: 1px solid var(--border); user-select: none; -webkit-user-select: none; }
.cf-stage.is-drawing { outline: 2px dashed var(--accent); outline-offset: 3px; }
.cf-img { display: block; width: 100%; height: 100%; pointer-events: none; -webkit-user-drag: none; }
.cf-svg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.cf-stage.is-drawing .cf-svg { pointer-events: auto; cursor: crosshair; touch-action: none; }
.cf-svg .hs-line.is-temp { stroke-dasharray: 7 5; fill: rgba(224, 49, 49, 0.08); }
.cf-stage.is-compliant .cf-img { opacity: 0.92; }
.cf-tags { position: absolute; inset: 0; pointer-events: none; }
.cf-tag {
  position: absolute; transform: translate(-35%, -35%); min-width: 22px; height: 22px; padding: 0 6px; border-radius: 999px;
  background: var(--hotspot); color: #fff; font-size: 0.75rem; font-weight: 800; display: inline-grid; place-items: center; box-shadow: 0 0 0 2px #fff;
}
.cf-tag.is-static { position: static; transform: none; margin-right: 8px; box-shadow: none; }
.cf-stage-note {
  position: absolute; left: 50%; bottom: 10px; transform: translateX(-50%); pointer-events: none; display: inline-flex; gap: 6px; align-items: center;
  padding: 6px 12px; border-radius: 999px; background: rgba(20, 22, 25, 0.78); color: #fff; font-size: 0.8rem; font-weight: 700; white-space: nowrap;
}
.cf-stage-note .icon { width: 16px; height: 16px; }
.cf-toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.cf-toolbar-spacer { flex: 1 1 auto; }
@media (max-width: 559px) { .cf-toolbar-spacer { display: none; } }
.cf-hs-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.cf-hs-list > li { border: 1px solid var(--border); border-radius: 8px; padding: 6px 6px 6px 10px; background: var(--surface-2); }
.cf-hs-row { display: flex; align-items: center; gap: 6px 12px; flex-wrap: wrap; }
.cf-hs-name { font-weight: 700; display: inline-flex; align-items: center; }
.cf-hs-dims { font-family: var(--mono); font-size: 0.8rem; color: var(--muted); flex: 1 1 auto; }
.cf-hs-adjust > summary { cursor: pointer; font-size: 0.8rem; font-weight: 700; color: var(--accent-text); padding: 4px 0; min-height: 28px; }
.cf-nums { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; padding: 4px 4px 6px 0; }
.cf-num { display: grid; gap: 2px; font-size: 0.7rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.cf-choices { display: grid; gap: 10px; }
.cf-choice { border: 1.5px solid var(--border); border-radius: var(--radius); padding: 10px 12px 12px; display: grid; gap: 8px; background: var(--surface); }
.cf-choice.is-correct { border-color: var(--ok); background: var(--ok-soft); }
.cf-choice-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.cf-choice-label { font-size: 0.8rem; font-weight: 800; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.cf-correct { display: inline-flex; align-items: center; gap: 6px; font-size: 0.85rem; font-weight: 700; cursor: pointer; min-height: 36px; }
.cf-correct input { width: 18px; height: 18px; accent-color: var(--ok); }
.cf-choice.is-correct .cf-correct { color: var(--ok-text); }
.cf-choice.is-locked .input { background: var(--surface-2); color: var(--muted); }
.cf-why > label { font-size: 0.72rem; }
.cf-refs { display: grid; gap: 12px; }
.cf-ref { display: grid; gap: 10px; padding: 12px; border: 1px solid var(--border); border-left: 4px solid var(--border-strong); border-radius: 8px; background: var(--surface-2); min-width: 0; }
.cf-ref:first-child { border-left-color: var(--accent); }
.cf-ref-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 32px; }
#cf-ref-add { justify-self: start; }
.cf-actions { display: grid; gap: 12px; padding: 16px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.cf-actions > p { margin: 0; }
.cf-errors { border: 1.5px solid var(--bad); background: var(--bad-soft); border-radius: var(--radius); padding: 12px 14px; }
.cf-errors:focus { outline: none; }
.cf-errors-title { display: flex; align-items: center; gap: 8px; font-weight: 800; color: var(--bad-text); margin: 0 0 6px; }
.cf-errors ul { margin: 0; padding: 0 0 0 18px; display: grid; gap: 4px; list-style: none; }
.cf-errors li { position: relative; }
.cf-errors li::before { content: ""; position: absolute; left: -13px; top: 0.6em; width: 6px; height: 6px; border-radius: 50%; background: var(--bad-text); }
.cf-errors .linklike { display: block; text-align: left; color: var(--text); font-weight: 600; line-height: 1.4; }
.cf-saved { border: 1px solid var(--ok); border-radius: var(--radius); margin-bottom: 16px; }
.cf-saved .btn-row { margin-top: 10px; }
.cf-saved .cf-howto { font-weight: 700; font-size: 0.9rem; }
.cf-warnings { margin: 6px 0 0; padding-left: 1.2rem; font-size: 0.9rem; }

.my-drills { padding: 0; margin-bottom: 16px; overflow: hidden; }
.my-drills > summary { list-style: none; display: flex; align-items: center; gap: 10px; padding: 14px 16px; cursor: pointer; min-height: 52px; }
.my-drills > summary::-webkit-details-marker { display: none; }
.my-drills > summary h2 { margin: 0; font-size: 1.05rem; }
.my-drills > summary .chev { margin-left: auto; color: var(--muted); transition: transform 0.15s; }
.my-drills[open] > summary .chev { transform: rotate(180deg); }
.my-drill-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--border); }
.my-drill { display: grid; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.my-drill.is-editing { background: var(--accent-soft); box-shadow: inset 4px 0 0 var(--accent); }
.my-main { display: flex; gap: 12px; align-items: center; min-width: 0; }
.my-thumb { flex: none; width: 88px; aspect-ratio: 4 / 3; border-radius: 6px; overflow: hidden; background: var(--surface-3); border: 1px solid var(--border); }
.my-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
.my-body { min-width: 0; }
.my-title { font-weight: 700; margin: 0 0 4px; line-height: 1.3; }
.my-meta { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: center; font-size: 0.8rem; color: var(--muted); margin: 0; }
.my-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.my-actions .btn .icon { width: 16px; height: 16px; }
.my-note { padding: 10px 16px 14px; margin: 0; }
@media (min-width: 560px) {
  .cf-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cf-row-ref { grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); }
}
@media (min-width: 760px) {
  .my-drill { grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
  .my-drill .confirm-box { grid-column: 1 / -1; }
}
@media (min-width: 1000px) {
  .cf-layout { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 24px; }
  .cf-stage { --stage-max-h: 56vh; margin: 0 auto; }
}
@media (min-width: 1000px) and (min-height: 700px) {
  .cf-media-col { position: sticky; top: 16px; }
}
@media (max-width: 400px) {
  .my-actions .btn { padding-left: 10px; padding-right: 10px; }
}

/* ---------- AI mode ---------- */
.ai-grid { display: grid; gap: 16px; align-items: start; }
.ai-col { display: grid; gap: 16px; min-width: 0; }
.ai-card { display: grid; gap: 12px; min-width: 0; }
.ai-card > p { margin: 0; }
.ai-card-title { display: flex; align-items: center; gap: 8px; font-size: 1.1rem; margin: 0; }
.ai-card-title .icon { color: var(--accent-text); }
.ai-card-title .pill { margin-left: 4px; }
.ai-privacy { background: var(--info-soft); border-color: transparent; box-shadow: none; display: grid; gap: 10px; }
.ai-privacy .ai-card-title .icon { color: var(--info-text); }
.ai-privacy-lead { font-weight: 700; margin: 0; }
.ai-privacy-list { margin: 0; padding-left: 1.2rem; display: grid; gap: 6px; font-size: 0.92rem; }
.ai-key-status { display: flex; align-items: flex-start; gap: 8px; margin: 0; font-size: 0.95rem; }
.ai-key-status > span:last-child { min-width: 0; }
.ai-key-status .ai-dot { margin-top: 0.45em; }
.ai-key-status code { font-family: var(--mono); background: var(--surface-2); padding: 1px 6px; border-radius: 4px; border: 1px solid var(--border); overflow-wrap: anywhere; }
.ai-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border-strong); flex: none; }
.ai-dot.ok { background: var(--ok); }
.ai-key-form { display: grid; gap: 10px; }
.ai-key-row { display: flex; gap: 8px; }
.ai-key-row .input { flex: 1 1 auto; min-width: 0; }
.ai-key-row .ai-show { min-height: 44px; flex: none; }
.ai-model { padding-top: 12px; border-top: 1px solid var(--border); }
.ai-gen-form, .ai-an-form { display: grid; gap: 12px; }
.ai-needkey { display: flex; align-items: center; gap: 6px; color: var(--muted); margin: 0; }
.ai-needkey .icon { width: 16px; height: 16px; }
.ai-status:empty, .ai-results-host:empty { display: none; }
.ai-progress { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: var(--radius); background: var(--surface-2); border: 1px solid var(--border); }
.ai-progress-body { flex: 1; min-width: 0; }
.ai-progress-body p { margin: 0; }
.spinner { width: 22px; height: 22px; border-radius: 50%; border: 3px solid var(--border-strong); border-top-color: var(--accent); animation: spin 0.8s linear infinite; flex: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.ai-error { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: var(--radius); border: 1.5px solid var(--bad); background: var(--bad-soft); }
.ai-error-icon { color: var(--bad-text); flex: none; }
.ai-error-icon .icon { width: 22px; height: 22px; }
.ai-error-body { min-width: 0; flex: 1; display: grid; gap: 6px; justify-items: start; }
.ai-error-body p { margin: 0; }
.ai-error-title { font-weight: 800; color: var(--bad-text); }
.ai-error-details > summary { cursor: pointer; font-size: 0.85rem; font-weight: 700; }
.ai-error-details ul, .ai-error-details p { margin: 4px 0 0; font-size: 0.85rem; overflow-wrap: anywhere; }
.ai-error-details ul { padding-left: 1.2rem; }
.ai-note-msg { display: flex; gap: 6px; align-items: center; margin: 0; color: var(--muted); }
.ai-note-msg.ok .icon { color: var(--ok-text); }
.ai-photo { display: grid; gap: 8px; }
.ai-photo img { display: block; width: 100%; height: auto; max-height: 340px; object-fit: contain; border-radius: var(--radius); background: var(--surface-3); border: 1px solid var(--border); }
.ai-photo-meta { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.ai-drop { min-height: 0; padding: 20px 16px; }
.ai-results { display: grid; gap: 12px; }
.ai-summary { display: grid; gap: 8px; justify-items: start; padding: 12px 14px; border-radius: var(--radius); background: var(--surface-2); border: 1px solid var(--border); }
.ai-summary p { margin: 0; }
.ai-findings { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.ai-finding { border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 8px; padding: 12px 14px; background: var(--surface); display: grid; gap: 6px; justify-items: start; min-width: 0; }
.ai-finding h3 { margin: 0; font-size: 1rem; }
.ai-finding p { margin: 0; font-size: 0.92rem; }
.ai-finding-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; }
.ai-look { display: flex; gap: 6px; align-items: flex-start; }
.ai-look .icon { width: 16px; height: 16px; margin-top: 3px; color: var(--accent-text); }
.ai-to-drill { margin-top: 4px; }
.ai-mine-list { list-style: none; margin: 0; padding: 0; display: grid; }
.ai-mine-list li { display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 10px; padding: 8px 0; border-top: 1px solid var(--border); }
.ai-mine-list li:first-child { border-top: 0; }
.ai-mine-title { font-weight: 700; flex: 1 1 12em; min-width: 0; }
@media (min-width: 1000px) {
  .ai-grid { grid-template-columns: minmax(300px, 0.8fr) minmax(0, 1.4fr); gap: 24px; }
}

/* ---------- placeholder / misc ---------- */
.placeholder { padding: 28px 0; }
/* toasts sit at the bottom of the screen, away from the page heading and the controls people just used;
   app.js sets --toast-lift so they clear the sticky Next bar on the drill page */
.toast-region { position: fixed; left: 50%; bottom: max(calc(16px + env(safe-area-inset-bottom)), calc(var(--toast-lift, 0px) + 12px)); transform: translateX(-50%); z-index: 50; display: grid; gap: 8px; width: max-content; max-width: calc(100vw - 32px); pointer-events: none; }
@media (min-width: 1080px) {
  /* wide screens: bottom-right corner, clear of the drill picture in the left column */
  .toast-region { left: auto; right: 24px; transform: none; justify-items: end; max-width: min(440px, calc(100vw - 48px)); }
}
.toast { padding: 10px 16px; border-radius: var(--radius); background: var(--text); color: var(--surface); font-weight: 600; font-size: 0.9rem; box-shadow: var(--shadow-lg); animation: marker-fade 0.2s ease-out both; }
.error-card { border: 1.5px solid var(--bad); background: var(--bad-soft); border-radius: var(--radius); padding: 16px; }
.noscript { padding: 24px 0; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

@media print {
  .site-header, .site-footer, .drill-toolbar, .hud, .filter-panel, .next-bar { display: none !important; }
}

/* home: wiring sandbox call-to-action */
.sbx-cta { display: flex; align-items: center; gap: 14px; padding: 16px; border-radius: var(--radius); border: 1px solid var(--border); border-left: 4px solid var(--accent); background: var(--surface); color: var(--text); text-decoration: none; box-shadow: var(--shadow); }
.sbx-cta:hover { border-color: var(--accent); }
.sbx-cta:hover .preview-go { text-decoration: underline; }
.sbx-cta-icon { flex: none; display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 10px; background: var(--accent-soft); color: var(--accent-text); }
.sbx-cta-icon .icon { width: 24px; height: 24px; }
.sbx-cta-body { display: grid; gap: 4px; min-width: 0; flex: 1 1 auto; }
.sbx-cta-title { font-weight: 800; font-size: 1.1rem; }
.sbx-cta-text { color: var(--muted); }
.sbx-cta-meta { font-size: 0.85rem; color: var(--muted); font-weight: 600; }
.sbx-cta .preview-go { flex: none; white-space: nowrap; }
@media (max-width: 560px) { .sbx-cta { display: grid; grid-template-columns: 44px minmax(0, 1fr); align-items: start; column-gap: 12px; row-gap: 10px; } .sbx-cta .preview-go { grid-column: 2; } }